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Influence of Fastener Coatings on Fretting Fatigue
Technical Paper
2007-01-3890
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Previous fatigue tests on mechanically fastened aerospace joints showed fatigue cracks often initiated in the countersink of the fastener hole where the fastener head was in contact with and caused fretting on, the hole bore. The work presented here evaluated the potential of a number of possible fastener coatings to reduce fretting and increase the fatigue life of the joint. The coatings were tested in a fretting fatigue test and in a ‘zero load’ fatigue test. The results showed that the best fretting resistance and fatigue life was obtained when aluminum pigmented coating (in accordance with NAS 4006) was used. The results also suggest that both test methods provide a similar ranking of performance. This means that the simpler fretting fatigue test may be useful as an initial screening method. However, more testing is needed to confirm this relationship.
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Citation
Giummarra, C., Zonker, H., Zeng, L., and Haylock, L., "Influence of Fastener Coatings on Fretting Fatigue," SAE Technical Paper 2007-01-3890, 2007, https://doi.org/10.4271/2007-01-3890.Also In
References
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